Review of Digital Controllers in Power Converters

Abstract

This review paper summarizes the different types of digital controller implementations used for power electronic converter applications. The review covers the use of analog, hybrid to digital structures. Over the period covered, the range of converter models have evolved from simple DC-DC converters to sophisticated multi-level designs to expand the range of applications from low-power (microwatts) to ultra high- power level (MW). The control algorithms themselves have evolved from very simple designs to using complex artificial intelligence techniques requiring a high level of computational burden.